Help please. Phone stuck on Samsung Logo.Support

Hello,
I was rebooting my phone today and it every time I try it gets stuck on The Galaxy S logo with the big flashing "S" on the screen. It acts like it is going to boot up but just after the ATT screen and the boot sound it gets stuck. I did the one-click-lag-fix about 2 weeks ago and the phone has been running smooth ever since. My wife and daughter are on the road so not having a phone really stinks right now. Any help is greatly appreciated. Thanks.
Matt

Hello,
I was rebooting my phone today and it every time I try it gets stuck on The Galaxy S logo with the big flashing "S" on the screen. It acts like it is going to boot up but just after the ATT screen and the boot sound it gets stuck. I did the one-click-lag-fix about 2 weeks ago and the phone has been running smooth ever since. My wife and daughter are on the road so not having a phone really stinks right now. Any help is greatly appreciated. Thanks.
Matt

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Have you already tried pulling out the battery and leaving it it off for about 30 sec, then put the battery back in and turn on? Or tried holding down both volume buttons while turning on to recover?